Expansible-collapsible element and method of producing the same



Feb. 26, 1924 1,485,233 H. C. MALLORY EXPANSIBLE COLLAPSIBLE ELEMENT ANDMETHOD OF PRODUCING THE SAME Original Fild April 22, 1914 Patented F eb.26, 1924.

UNITED STATES 1,485,233 PATENT OFFICE.

HARRY C. MALLORY, OF BELLIORT, NEW YORK, ASSIGNOR, BY MESNE ASSIGNMENTS,TO AMERICAN RADIATOR COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION O NEWJERSEY.

EXPANSIBLE-COLLAPSIBLE ELEMENT AND METHOD OF PRODUCING THE SAME.

Original application filed April 22, 1914, Serial No. 833,593 ZnowPatent No. 1,366,473 dated January 1921). Divided and this applicationfiled August 31, 1920. Serial No. 407,203.

7 '0 aZZ w hom it may concern.

Be it known that I, HARRY'C. MALLORY, a citizen of the United States,residing at Bellport, Suffolk County, in the State of New 6 York, haveinvented certain new anduseful Improvements in EXpansible CollapsibleElements and Methods of Producing the Same, of which the following isthe full, clear, and exact specification. My invention relates toelasticelements, and the same has for its object more particularly to providean elastic metallic element for use in connection with apparatus ordevices subject to or influenced by temperature 15 or pressurevariations,,-whereby to operate a valve, apparatus or other mechanism.

Further, said invention has for its object to provide aneXpansible-collapsible element comprising a circumferentially corrugated20 body portion, and a closed end terminating in a reduced end servingasa valve, or as a part to permit of the attaching of a valve or otherelement thereto.

Further, said invention has for its object 2 to provide anexpansible-collapsible element formed as an integral, unitary structurecomprising a shell having a circumferentially corrugated body portionand a closed end of greater thickness than said body portion. The closedend comprises a reduced cylindrical portion pressed, spun or otherwisedeveloped from said closed end and provided with a head of appropriateform to meet the requirements of the service which the device isintended to perform.

Further, said invention has for its object to provide a simple,practical and inexpensive method of producing an expansiblecollapsibleelement of the character speci- Other objects will in part be obvious,and in part be pointed out hereinafter.

To the attainment of the aforesaid objects and views my inventionconsists in the novel details of construction, and in the combination,connection and arrangement of parts, and inthe several stepsvconstituting the method hereinafter more fully described, and thenpointed out in the claims.

In the accompanying drawings forming part of this specification wherelnlike numerals of reference indicate like parts,

Figure 1 is a side elevation showing one form of expansible-collapsihleelement constructed according to, and embodying my said invention;

Fig. 2, is a bottom View thereof, and Fig. 3, is a central verticalsectional View. In said drawings 10 designates a cylindrical shellhaving a thin side wall 11, and a closed end 12, preferably madeof-greater thickness than said side wall 11'. 4

The intermediate 01' body portion of said ,shell 10 is circumferentiallycorrugated to form a series of corrugations or folds- 13. At its openend the shell is provided with an annular band 14 to permit of theconvenient attachmentof the same to another cooperating part or element,as desired, such, for example, as shown at Fig. 1 of applicants PatentNo. 1,366,473, dated January 25, 1921, of which this application isadivision. The closed end of the shell, which is materially thicker thansaid corrugated intermediate portion, has its central portion pressed bysuitable dies or spun to form an integral reduced, cylindricalprojection 15 of substantially'the same thickness as the end 12 fromwhich it is formed, and in the present instance, said projection 15 isshown terminating in a conical head 16, which is designed to'act as avalve member to seatupon a valve seat when said corrugated body por.tion of the shell is expanded mechanically or automatically when theexpansible-collapsible element forms part of a thermosensitive orpressure sensitive apparatus or de- In constructing theexpansible-collapsible element herein shown and described, the reduced,cylindrical projection 15 may be formed before the body portion of theshell is corrugated, or after the same has been subjected to thecorrugating operation, as may be found most convenient or desirable.

It will be noted-that an expansible-collapsible element constructed asherein shown and described is made entirely as an integral, unitarystructure, and therefore reguires no assembling, and, further, astheevice requires no assembling or hand work the same becomes practically astandardized machine-made product.

Having thus described my said invention, what I claim and desire to.secure by Letters Patent is:

1. A device of the character described comprising a shell having aoircumferening from a blank a 1 body portion tially corrugated bodyportion and a closed end, said closed end comprising a projection ofsmaller diameter than the remaining ortion of said closed end and formedfrom said end, and a conical'head at-the outer end of said projection,substantially as 2. A device'of the character described,- comprising ashell .having a' circumferentially corrugated body portion and a closedend integral therewith of relatively greater thickness than said bodyportion, saidclosed end comprising a projection extending centrallythereof, and a conical head at the outer end of said projectionconstituting a valve face, substantially as specified.

3. A device of the character described formed as an integral, unitarystructure formed from a cylindrical shell comprising" a circumferntiallycorrugated body portion and aclosed end of greater thickness than saidcorrugated body portion, said closed end comprising a hollow,cylindrical member extending centrally thereof and terminating in aconical head constituting a valve face, substantially as specified.

4. The process of making a device of the character described whichconsists in form- 7 ing from-a blank a shell having a flexible and aclosed end, and .then forming a valve member integrally with said closedend, substantially as specified;

5. The process of making a deviceof the character described whichconsists in formshell having a circumferentially corrugated body portionand a closed end, and then forming a valve member of smaller diametertlian said closed end extending centrally therefrom,"substantially asspecified.

6. The process character described which ing from a blank a shellhavinga circumferentially corrugated body portion, and aclosed end ofrelatively greater thickness than the wall of said'body portion, andthen forming from said closed end a hollow cylindricalmember of smallerdiameter than.

'in' a conical head constituting a valve. face,

substantially as specified.

Signed at; the city of New York, New York County, in the State of NewYork, this first day of June, one thousand nine hundred and twenty. I

1 HARRY (IMALLORY.

Witnesses:

CONRAD A. DIETERIOH, IRENE V. BANNIN,

ofmaking adevice of the.

consists in formand a hollow, cylindrical

